Settings: About: Fix cros channel info.

chrome/browser/resources/settings/about_page/about_page.js

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @fileoverview 'settings-about-page' contains version and OS related
  * information.
  */
 Polymer({
   is: 'settings-about-page',
@@ skipping 45 matching lines @@
     this.aboutBrowserProxy_.pageReady();
 
     this.lifetimeBrowserProxy_ =
         settings.LifetimeBrowserProxyImpl.getInstance();
 
 <if expr="chromeos">
     this.addEventListener('target-channel-changed', function(e) {
       this.targetChannel_ = e.detail;
     }.bind(this));
 
-    Promise.all([
-      this.aboutBrowserProxy_.getCurrentChannel(),
-      this.aboutBrowserProxy_.getTargetChannel(),
-    ]).then(function(channels) {
-      this.currentChannel_ = channels[0];
-      this.targetChannel_ = channels[1];
-
+    this.aboutBrowserProxy_.getChannelInfo().then(function(info) {
+      this.currentChannel_ = info.currentChannel;
+      this.targetChannel_ = info.targetChannel;
       this.startListening_();
     }.bind(this));
 
     this.aboutBrowserProxy_.getRegulatoryInfo().then(function(info) {
       this.regulatoryInfo_ = info;
     }.bind(this));
 </if>
 <if expr="not chromeos">
     this.startListening_();
 </if>
@@ skipping 221 matching lines @@
     });
   },
 
 <if expr="_google_chrome">
   /** @private */
   onReportIssueTap_: function() {
     this.aboutBrowserProxy_.openFeedbackDialog();
   },
 </if>
 });